Is obstructive sleep apnea associated with cortisol levels- A systematic review of the research evidence

Sleep Medicine Reviews , 05/04/2012Tomfohr LM et al.

Methodological concerns such as infrequent sampling, failure to match comparison groups on demographic factors known to impact cortisol levels (age, body mass index; BMI), and inconsistent control of variables known to influence HPA function may have limited the results.